1. People allow a stranger to prosper, but cannot tolerate the promotion of a person around them. Because there are contrasts and contrasts of interests between people at the same level, but there are no such problems with strangers. ——Yu Dan

2. As long as possible, everyone will become a tyrant. This is the nature given to humans by nature. ——Defoe

3. The more a person cares about, the more he or she feels inferior. ——Yu Dan

4. Love, hope, fear and belief constitute human nature, and they are the signs and characteristics of human nature. ——Lord Browning

5. Human arrogance is a mentality that can only be discovered in retrospect, and its existence can only be determined after being punished. ——Nabokov

6. Human spiritual civilization depends on the cultivation of beauty, and beauty can subtly influence human nature. ——"New Maxims"

7. People, in fact, all rational beings, exist because they are an end in themselves, not just tools for this or that will. ——Kant

8. Human wildness is no different from the various beasts in the oak forest. ——Ben Jonson

9. Is there such a thing as human nature? Of course there is. But there is only concrete humanity, not abstract humanity. In a class society, there is only class-based humanity, but no super-class humanity.

——Anonymous